HP Storage Mirroring V5 Software - Manual (Page 145)

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Failback then restoration
Failback before restoration can be a simpler process, but it may require additional downtime. The amount of downtime will
depend on the amount of data to be restored. Users must be kept off of the source and target during this entire process.
1. Resolve the problem(s) on the source that caused it to fail. Make sure in resolving the problems, that you do not bring
the source on the network at this time because the target currently has the source’s identity because of failover.
2. Schedule a time for this process. Select a time that will have minimal disruption on your users.
3. When you are ready, begin the failback process.
a. From the Failover Control Center, select the target that is currently standing in for the failed source.
b. Select the failed source and click Failback . The user downtime starts now. If you have a pre-failback script
configured, it will be started.
c. When failback is complete, the post-failback script, if configured, will be started. When the script is complete, you
will be prompted to determine if you want to continue monitoring the source, do not select either option. Leave
the prompt dialog box open as is.
4. Bring your source onto the network at this time, but make sure that the users are not accessing it. The target must be
able to access the source, but users cannot because the data on the source is out-of-date.
5. Once your source is on the network, select Continue or Stop in the Failover Control Center to indicate if you want to
continue monitoring the source. After you have selected whether or not to continue monitoring the source machine,
the source post-failback script, if configured, will be started.
6. Stop any applications that may be running on your source. The files must be closed on the source so that updated files
from the target will overwrite the files on the source.
7. Now you can begin your restoration process.
a. From the Management Console on the target, select Tools , Restoration Manager .
b. Select the Original Source machine. This is your source machine where the data originally resided.
c. Select the Restore From machine. This is the target machine where the copy of the data is stored.
NOTE: The source must be online and Storage Mirroring must be running to ensure that the source post-failback
script can be started. If the source has not completed its boot process, the command to start the script
may be lost and the script will not be initiated.